Código:
<membership defaultProvider="AspNetActiveDirectoryMembershipProvider"> <providers> <add name="AspNetActiveDirectoryMembershipProvider" type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="LDAP://servidor/OU=UsuariosWeb,DC=servidor,DC=local" connectionUsername="USUARIO" connectionPassword="PASSWORD"/> </providers> </membership>